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Scientists baffled as Earth spins faster than usual

Discussion in 'Too Hot for Swamp Gas' started by orangeblue_coop, Aug 3, 2022.

  1. tegator80

    tegator80 GC Hall of Fame

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    Not only is it spinning WAY faster, it is spinning around a center that is different from the past 5 Billion years or so.





    It is centered around Washington DC.
     
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  2. lacuna

    lacuna The Conscience of Too Hot Moderator VIP Member

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    You too? For a while now I've felt like time is moving at the speed of a 78rpm record and I'm stuck at 33.
     
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  3. WarDamnGator

    WarDamnGator GC Hall of Fame

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    The part I'm disagreeing with is "The force that creates rotation is magnetic" ... never heard that. If you google it, the first result says "because it formed in the accretion disk of a cloud of hydrogen that collapsed down from mutual gravity and needed to conserve its angular momentum. It continues to spin because of inertia."

    Nothing about magnetic fields. Inertia relates to the first law of dynamics I quoted above, it will continue to spin until a force acts on it to stop it ... the rotation slows due to friction but for it to speed up would take an opposite force greater than the friction ... which is why the scientists say it's unusual.
     
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  4. g8trdoc

    g8trdoc Premium Member

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    Or cooling or climate change or the fact that we don’t acknowledge trans rights….
     
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  5. jhenderson251

    jhenderson251 Premium Member

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    These democratic socialist communist fascist socialist communists aren't content with destroying America. They're trying to destroy clocks, too!
     
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  6. DesertGator

    DesertGator VIP Member

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    A little clarification if you don't mind. By "It continues to spin because of inertia", you refer to the Earth itself as "it"? And I'd argue against the notion that there are "no" external forces to speed or slow its inertia. Splitting hairs, but I'd say that there are "no significant" external forces. Other celestial bodies do act on it in an insignificant way (e.g., the moon causing tides). The gravity of the sun and its rotation is the most significant force acting on the rotation of the Earth because of its distance and size. There isn't another force that is significantly large sized enough to either add or reduce that inertia.

    EDIT: After thinking about it, there actually is. The Moon's orbital distance increases about an inch per year and that increase acts on the rotation of BOTH bodies causing an approximate 15us (had to look that part up) increase in the length of the day.
     
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  7. jhenderson251

    jhenderson251 Premium Member

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    So this phenomenon is actually kind of related to diminishing marginal returns.

    As you age, every future time unit (day/month/year) represents a progressively smaller percentage of your life, e.g., from 10 years old to 11 years old represents 10% of someone's life, but from 50 to 51 years old represents only 2%.
     
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  8. OklahomaGator

    OklahomaGator Jedi Administrator Moderator VIP Member

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    It would take 629 years at that rate before they would need to use the negative leap second.
     
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  9. WarDamnGator

    WarDamnGator GC Hall of Fame

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    Bad math .... it says "if the rotation rate continues to speed up" ... not assuming it stays the same. Plus, you have to factor in how far we've wondered from the last positive leap second.
     
  10. docspor

    docspor GC Hall of Fame

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    Whew. Was gonna cut back on shrooms & weed, but I guess this explains the dizziness
     
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  11. channingcrowderhungry

    channingcrowderhungry Premium Member

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    The hole in the ozone was creating drag as we rotated. Once we got the hole smaller, we spun faster.

    I just made that up, but it sounds legit
     
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  12. OklahomaGator

    OklahomaGator Jedi Administrator Moderator VIP Member

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    I said "at that rate".
     
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  13. WarDamnGator

    WarDamnGator GC Hall of Fame

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    Well, staying at the same rate wasn't the assumption the scientist was making when he said a leap second might need to be added, the article assumes continued acceleration, not the speed staying the same.
     
  14. PerSeGator

    PerSeGator GC Hall of Fame

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    Atmospheric tides, caused by the sun's heating of the atmosphere, also have a significant accelerative impact on earth's rotation.

    More energy retained = more acceleration. Hypothetically, anyways.
     
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  15. DesertGator

    DesertGator VIP Member

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    Has this been proved out? It's informative and something I never thought about, but makes sense in theory.
     
  16. OklahomaGator

    OklahomaGator Jedi Administrator Moderator VIP Member

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    OK, if it accelerates at 1.59 milliseconds per year in 34 years we would need a negative leap one second.
     
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  17. AgingGator

    AgingGator GC Hall of Fame

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    The fact that you had to google it says it all.
     
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  18. AgingGator

    AgingGator GC Hall of Fame

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    Not in any true scientific sense, but since it sounds good to liberals it automatically becomes “settled science”.
     
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  19. WarDamnGator

    WarDamnGator GC Hall of Fame

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    Now you are just forgetting to factor in how far we are currently from requiring a leap second. If we are currently 30 milliseconds away from requiring a leap second, or 500 milliseconds away, it makes a significant difference in how many years it will take to get there.

    I get your post was to make the scientist sound dumb, but he probably knows more about this than you and I do, and wouldn't have suggested it as a possibility if we were decades or centuries away from it happening.
     
  20. OklahomaGator

    OklahomaGator Jedi Administrator Moderator VIP Member

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    The article also says there is a 70% chance we have reached minimum velocity which means we won't have to have a negative leap second.